Brake-shoe and reinforcing-back therefor.



J. D. GALLAGHER.

BRAKE SHOE AND REINFORCING BACK THEREFOR.

APPLIOATION FILED MAR. 24, 1913.

1,070,447, Patented Aug. 19, 1913.

UNITED STATES EATENT OFFICE.

JOSEPH D. GALLAGHER, OF GLEN RIDGE, NEW JERSEY, ASSIGNOR T0 AMERICAN BRAKE SHOE & FOUNDRY COMPANY, OF MAHWAH, NEW JERSEY, A CORPORATION or NEW JERSEY.

BRAKE-SHOE AND RE;[NFORCING-BA CK THEREFOR.

To all whom it may concern:

Be it known that I, JosEPH D. GALLA- GHER, a citizen of theUnited States, and a resident of Glen Ridge, in the county of Essex and State of New Jersey, have made and invented certain new and useful Improvements in Brak -Shoes and Reinforcing-Backs Therefor, of,which the following is a specification. 4

My invention relates to brake shoes having a cast metal body, and 'a wrought metal reinforcing back embedded. in the .rea'r surface or back of the shoe, and to the Wrought metal back itself, the object of the invention being to provide a construction in which the finished shoe, or rather the body portion thereof, is less liable to slip or crack longitudinally than is the case with shoes as now manufactured.

From my experience in the manufacture of brake shoes, I have found that there is often a tendency of the body portion of'the shoe to break, crack or split longitudinally, particularly in those instances wherein the shoe is provided with inserts of cast or wrought metal, the result being that the shoe is liable to fall apart, or when held together, to so separate to cut or injure the tread of the wheel to which the shoe is applied.

The object of my invention is to cure this defect, and to 'so construct the shoethat thereis little or no danger whatever of its cracking or splitting, and in the event that the shoe does so crack or split, to so hold or bind the parts or sections together that they will not start or separate to that extent wherein there is any danger or liability of the shoe cutting or injuring the tread of the wheel.

'proved reinforcing back is made; Fig. 2 is a view showing the completed back in perspective;'Fig.'3 1s a View showing my improved brake shoe in perspective; and Fig. 4c is a Specification of Letters Patent. Application filed March 24, 1913. Serial No. 756,30-7.

With this and otherends in view, my in-- length, or one longer as their ends extend past one anotherin the PatentedAug. 19,1913.

view showing a section taken-upon a transverse plane indlcated by the line 4-4, Fig. 3.

Referring to the drawing, Fig, lshows a blank cut from a plate of steel or iron of a thickness of about ths of an inch, or thereabout, which blank comprises two substantially parallel sides or bars 6 connected with one another by across piece 7, and the ends of which sides are provided with projecting portions 8 extending toward one another. The sides 6 extend longitudinally of the finished shoe when embedded in the rear surface or back thereof, as shown in Fig. 3,

'and are curved to correspond with the curvature of the shoe during the bending processes to which the blank is subjected to produce the finished reinforcingback shown in Fig. 2.

The cross-piece 7 of the blank is bent to form an upwardly extending attaching lug 9 whereby the brake shoe may be secured to and supported from a brake head or similar support, as will be understood. This cross piece and the lug formed by bending the same is shown as integral with the sides 6, but the said cross bar may obviously be formed as a separate piece the ends of which are secured to the sides or bars of any form and in any way, or a previously formed lugmay be secured in any way to bars such the sides 6, to form a finished reinforcing back, as will be understood.

The combined length 0f the portions 8 adjacent the ends of the sides 6 is such that the extremities thereof extend past one another, or overlap as shown in'the drawing,

after the cross bar 7 of the blank has been bent to form the finished reinforcing back,

the bending of the cross bar obviously re-"* sulting in bringing the sides closer to one another than was the case in the original blank. It is, however, immaterial whether these projecting portions are of the same than the other, so long finished reinforcing back.

The reinforcing back formed as above ex-' 1 plained is placed in a mold and the molten free ends of the extending portions 8 together to thus prevent the ends of the sides 6 from spreading and the body of the shoe from splitting. The ends of these portions should be formed or shaped in such a ,way that the cast metal of the body of the shoe may get a firm grip on them as the shoe is formed, this being accomplished in the embodiment of my invention illustrated, by providing holes 11 adjacent the ends of the projecting portions 8, which holes register in the completed back, as shown in Fig. 2. It will then be obvious that as the body of the shoe is poured the fluid metal Will flow through the registering openings and thus lock the ends of the projecting portions together, thus, as will be understood from Fig. 4, preventing the body of the shoe from splitting or breaking along longitudinal planes or planes extending longitudinally of the body of the shoe.

Having thus described and explained my invention, I claim and desire to secure by Letters Patent:

1. A reinforcing back for a brake shoe comprising two sides, the free extreme ends of which are bent inwardly toward each other and provided with openings through which the cast metal of the body may flow,

and an attaching lug connecting said sides together.

2. A reinforcing back for brake shoes comprising two sides extending longitudinally of the shoe, the free end of each of said sides being bent inwardly and provided the body metal into and through the same.-

4. A reinforcing back for' brake shoes comprising two sides adapted to extend longitudinally of the shoe and the free ends of which sides are unconnected with one another an attaching lug connecting said sides together; and means located at the ends of said sides for locking said ends together.

5. A reinforcing back for brake shoes comprising'two sides adapted to extend longitudinally of the shoe and the adjacent ends of which sides are provided with portions extending past one another and adapted to be engaged and locked together by the metal of the body portion of the shoe, and anattaching lug connecting said sides with one another.

6. A reinforcing back for brake shoes comprising two substantially parallel sides adapted to extend longitudinally of the shoe and the adjacent ends of which sides are provided with portions extending past one another and having registering openings through'which the metal of the shoe may flow to thereby lock said ends together; and an attaching lug connecting said sides.

7 A brake shoe comprising a cast metal body portion; a reinforcing back embedded in the rear surface of said body and comprising two substantially parallel sides eX- tending longitudinally of the shoe and the adjacent ends of which sides are provided with portions extending past one another and which portions are engaged and locked .together by the metal of the-body portions of the shoe; and an attaching lug connecting said sides with one another.

8. A brake shoe comprising a cast metal body portion; a reinforcing back embedded in the rear surface of said body and comprising two substantially parallel sides extending longitudinally of the shoe and the adjacent ends of which sides are provided with portions extending past one another and having registering openings through I which the metal of the body of the shoe extends to thereby lock said ends together; and an attaching lug connecting said sides with one another.

9. A brake shoe comprising a cast metal body portion; a reinforcing back embedded in the rear surface of said back and comprising a plurality of bars extending longitudinally of the shoe; connecting members whereby said bars'are prevented from moving away from one another; and means whereby said connecting members and bars are locked together by the cast metal of the body portion of the shoe.

Signed at New York, borough of Manhattan, in the county of New York and State of New York this 21st day of March, A. D. 1913. i

JOSEPH D. GALLAGHER. Witnesses:

. A. V. WALSH,

' R. N. FLINT. 

